Difference between revisions of "Documentation/How Tos/Calc: COMBIN function"
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| − | '''[[Documentation/How_Tos/Calc: COMBINA function|COMBINA]]''' | + | '''[[Documentation/How_Tos/Calc: COMBINA function|COMBINA]]''', |
| + | '''[[Documentation/How_Tos/Calc: PERMUT function|PERMUT]]''', | ||
| + | '''[[Documentation/How_Tos/Calc: PERMUTATIONA function|PERMUTATIONA]]''' | ||
'''[[Documentation/How_Tos/Calc: Mathematical functions|Mathematical functions]]''' | '''[[Documentation/How_Tos/Calc: Mathematical functions|Mathematical functions]]''' | ||
Revision as of 20:28, 8 April 2008
COMBIN
Returns the number of combinations of a subset of items.
Syntax:
COMBIN(setsize; subsetsize)
- setsize is the number of items in the set.
- subsetsize is the number of items to choose from the set.
- COMBIN returns the number of ways to choose these items. For example if there are 3 items A, B and C in a set, you can choose 2 items in 3 different ways, namely AB, AC and BC.
- COMBIN implements the formula:
- setsize!/(subsetsize!*(setsize-subsetsize)!)
Example:
COMBIN(3,2)
- returns 3.
